Method and device for evaluating seismic toughness of bridge crossing active fracture

Abstract

The embodiment of the invention provides an anti-seismic toughness evaluation device for a bridge crossing an active fracture, and relates to the field of evaluation and detection. According to the shock resistance toughness evaluation device for the bridge crossing the movable fracture, an adsorption wheel is hinged to the end of a support, a hollow bin is formed in an inner cavity of the adsorption wheel, a rotating shaft is arranged at the circle center of an inner cavity of the hollow bin, and a spring is arranged between the outer surface of the rotating shaft and the inner cavity wall of the hollow bin; the invention further discloses a shock resistance toughness evaluation method for the bridge crossing the active fracture, after the device runs through the air extracting pump, the adsorption wheel generates adsorption force, the adsorption wheel can be adsorbed to the outer surface of a bridge steel cable, and then the phenomenon that the adsorption wheel moves and slips is prevented.

Description

Technical Field

[0001] The present application relates to the field of evaluation and detection technology, and in particular, to a method and device for evaluating the seismic toughness of a bridge spanning an active fracture. Background Art

[0002] Bridges generally refer to structures built on rivers, lakes, and seas to allow vehicles and pedestrians to pass smoothly. When some bridges are built, important large-scale construction will avoid active fault zones. However, there are large fault zones in the bridge site area of ​​some bridges. No matter where they are built, they cannot avoid active fault zones. Therefore, the bridges will be reinforced, and their seismic resistance needs to be evaluated to test whether the bridges can continue to be used.

[0003] In the evaluation of bridge seismic resistance, the bridge will be rated, and the piers, bridge cables, and platform foundation geological conditions will also be inspected. At the same time, according to (patent number: CN202210952238.9, patent name: a bridge cable flaw detection device), the present invention solves the technical problems of complex structure and poor climbing ability of the flaw detection device through climbing limit rotating arms, hanging support arms and combined limit carrying arms; according to the problem that the flaw detection device is easy to damage the outer protective layer, a crawler climbing method is adopted, and an internal transmission crawler climbing device is set. Compared with traditional traveling wheels, it has more contact area and better grip, is easy to cross obstacles, and has a smaller unit area pressure on the protective layer, which solves the contradictory technical problem that the pressure during climbing should be large (the supporting force during climbing should be large enough to ensure that the flaw detection device will not slip) and small (avoid excessive pressure on the protective layer to affect the service life of the cable).

[0004] In the above patent, in order to improve the protection of the steel cables of the bridge, a black or colored high-density polyethylene sheath is used on the outermost layer of the steel cables to protect the steel cables. However, the top of the steel cables is located at a high position, so on some rainy and foggy days, some water stains will remain on the outer surface of the steel cables. When the equipment of the above patent rises and crawls, these water stains will cause the track wheels to slip, which will easily affect its detection. Summary of the invention

[0005] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a method and device for evaluating the seismic toughness of a bridge across an active fracture. After the device is operated by a vacuum pump, its adsorption wheel generates an adsorption force, which can make the adsorption wheel adsorb on the outer surface of the bridge cable, thereby preventing it from slipping when moving.

[0006] The seismic toughness assessment device for a bridge across an active fracture according to an embodiment of the present application includes a bracket:

[0007] An adsorption wheel is hingedly provided at the end of the bracket, and a hollow chamber is provided in the inner cavity of the adsorption wheel, wherein a rotating shaft is provided at the center of the inner cavity of the hollow chamber, and a spring is provided between the outer surface of the rotating shaft and the inner cavity wall of the hollow chamber, and adsorption holes are evenly distributed on the outer surface of the adsorption wheel.

[0008] Furthermore, the outer surface of the adsorption wheel is connected to a sealing cover, which is located on the upper part of the adsorption wheel. A channel with a hollow structure is provided between the pair of sealing covers, and a camera assembly and a detection element are provided on the surface of the channel.

[0009] Furthermore, an air pump is provided at the upper end of the channel, and an air extraction pipe is provided between the air extraction end of the air extraction pump and the inside of the channel.

[0010] Furthermore, a crown gear is provided on one side of the outer surface of the adsorption wheel, a double-axis motor is provided between a pair of crown gears, a first gear is provided at the output end of the double-axis motor, and the first gear is meshed and connected with the crown gear.

[0011] Furthermore, an exhaust box is arranged above the channel, and the inner cavity of the exhaust box is a hollow structure. At the same time, a telescopic tube is arranged on one side of the outer surface of the back frame, and connecting pipes are arranged between the four corners of the outer surface of the exhaust box and the telescopic tube.

[0012] Furthermore, a telescopic rod is provided on one side of the outer surface of the bracket, and one end of the telescopic rod extends into the interior of the telescopic tube.

[0013] Furthermore, an exhaust head is provided on the upper end of the bottom surface of the inner cavity of the exhaust box, and an exhaust pipe is provided on the gas output end of the vacuum pump, and an opening at one end of the exhaust pipe is connected to an opening at the bottom surface of the exhaust head.

[0014] Furthermore, a first exhaust hole is provided on the outer surface of the exhaust head inside the exhaust box, and a fixed bin is formed inside the exhaust head, and a plug is provided inside the fixed bin. The shape of the plug is adapted to the fixed bin, and a second exhaust hole identical to the first exhaust hole is provided on the outer surface of the plug, and a movable bin is extended outward above the fixed bin, and an extension pipe is extended on one side of the outer surface of the exhaust head.

[0015] Furthermore, a slide groove is opened at the upper end of the shell, and a dust removal ring is arranged inside the slide groove. At the same time, the end of the extension tube extends into the slide groove, and an air passage is opened on the outer ring part of the dust removal ring, and a telescopic hole is opened outward on the inner ring wall of the dust removal ring, and the telescopic hole is communicated with the extension tube.

[0016] According to an embodiment of the present application, a method for evaluating the seismic toughness of a bridge across an active fracture includes the following steps:

[0017] Step 1: When the bridge needs to be evaluated for seismic resistance, the outer shell can be disassembled and then the three sets of outer shells are assembled and put on the outer surface of the cable;

[0018] Step 2: After the equipment is assembled, the vacuum pump can be operated, and the suction wheel can be closely attached to the outer surface of the steel cable under the operation of the vacuum pump;

[0019] Step 3: Finally, under the operation of the dual-axis motor, the camera assembly and the detection element can evaluate and detect the bridge cables.

[0020] The beneficial effects of the present application are as follows: when the earthquake resistance of the bridge needs to be evaluated, the three sets of outer shells can be disassembled, and then the outer shells are put on the outer surface of the bridge cable and then tightened and fixed by fixing belts. As the vacuum pump performs suction, the part of the adsorption wheel that fits the cable can be adsorbed on the outer surface of the cable through the vacuum pipe and the channel, thereby preventing the adsorption wheel from slipping and being difficult to move forward when the device is moving, and after the adsorption wheel is subjected to force, its surface will be concave, thereby making the surface of the adsorption wheel subject to more adsorption force to prevent sliding, and the vacuum pump sucks the discharged gas through the exhaust pipe When discharged into the exhaust head, the air pressure can push the telescopic rod, and then the adsorption wheel can squeeze and adsorb on the outer surface of the bridge cable, thereby improving the adsorption tightness. At the same time, after the adsorption wheel is tightly adsorbed, the gas discharged from the exhaust pipe will then push the plug, thereby separating and interlacing the second exhaust hole and the first exhaust hole. Then the gas is discharged into the mobile warehouse through the second exhaust hole and discharged from the extension tube. When the gas inside the extension tube is discharged, since the three sets of dust removal rings are sleeved on the outer surface of the bridge cable, the gas inside the extension tube can be blown to the outer surface of the bridge cable through the telescopic hole, thereby drying the outer surface of the cable.

[0021] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the capsaicin preparation device and the preparation process thereof according to the embodiment of the present application;

[0024] Figure 2 is a schematic diagram of the explosion structure of the shell according to an embodiment of the present application;

[0025] Figure 3 is a schematic diagram of the structure of an adsorption wheel according to an embodiment of the present application;

[0026] Figure 4 is a schematic diagram of the front plan structure of the bracket according to an embodiment of the present application;

[0027] Figure 5 is a schematic diagram of a top plan structure of a bracket according to an embodiment of the present application;

[0028] Figure 6 is a schematic diagram of the cross-sectional structure along the line AA according to an embodiment of the present application;

[0029] Figure 7 According to the embodiment of the present application Figure 6 The enlarged structural diagram at A in the middle;

[0030] Figure 8 is a schematic diagram of the planar structure of a dust removal ring according to an embodiment of the present application;

[0031] Fig. 9 is a schematic diagram of the cross-sectional structure of Yan BB according to an embodiment of the present application;

[0032] Fig.10 It is a schematic diagram of the telescopic column structure according to an embodiment of the present application.

[0033] Icons: 1-housing; 11-fixing ring; 12-fixing belt; 13-slideway; 2-back frame; 21-bracket; 211-telescopic tube; 212-telescopic rod; 22-sealing cover; 23-adsorption wheel; 231-crown gear; 232-hollow chamber; 233-spring; 234-adsorption hole; 235-rotating shaft; 24-dual-axis motor; 241-first gear; 25-channel; 251-camera assembly; 252-detection element; 26-vacuum pump; 261- Suction pipe; 262-exhaust pipe; 27-exhaust box; 271-connecting pipe; 272-exhaust head; 273-fixed bin; 274-movable bin; 275-extension pipe; 276-first exhaust hole; 28-plug; 281-second exhaust hole; 282-right angle rod; 283-lower pressure plate; 3-dust removal ring; 31-air duct; 32-telescopic hole; 33-telescopic bin; 34-telescopic column; 35-inlet duct; 36-air guide hole; 37-cleaning brush; 38-air guide hood. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0035] In order to make the purpose, technical solutions and advantages of the implementation methods of this application clearer, the technical solutions in the implementation methods of this application will be clearly and completely described below in conjunction with the drawings in the implementation methods of this application. Obviously, the described implementation methods are part of the implementation methods of this application, not all of the implementation methods. Based on the implementation methods in this application, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0036] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0037] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0038] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0040] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0041] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0042] The following describes the structure and construction method of treating expansive soil slopes with basalt fiber anchor rods and chemical modifiers according to the embodiments of the present application with reference to the accompanying drawings.

[0043] like Figure 1-Figure 2 It is shown that the seismic toughness assessment device for a bridge across an active fracture according to an embodiment of the present application comprises: three sets of mutually spliced ​​shells 1 and a back frame 2 connected to the inner wall of the shell 1, and two sets of brackets 21 are arranged oppositely on the back of the back frame 2. A fixing ring 11 is arranged on one side of the front of the shell 1, and one end of a fixing belt 12 arranged on the other side of the front of the shell 1 passes through the fixing ring 11 and is connected and tightened, so that the three sets of shells 1 can be put on the outer surface of the steel cable of the bridge, and then the seismic resistance of the bridge can be evaluated.

[0044] like Figure 2-Figure 6 As shown, a rotatable adsorption wheel 23 is hingedly provided at the end of the two groups of brackets 21, and the inner cavity of the adsorption wheel 23 is provided with a hollow chamber 232, wherein a rotating shaft 235 is provided at the center of the inner cavity of the chamber 232, and a spring 233 is provided between the outer surface of the rotating shaft 235 and the inner cavity wall of the chamber 232, and the spring 233 can provide a certain support effect on the adsorption wheel 23, so that the outer surface of the adsorption wheel 23 can be pressed and concave after being attached to the surface of the steel cable. Adsorption holes 234 are evenly distributed on the outer surface of the adsorption wheel 23, and the adsorption wheel 23 can be adsorbed on the outer surface of the bridge steel cable through the adsorption holes 234. At the same time, a sealing cover 22 is connected to the outer surface cover of the adsorption wheel 23, and the sealing cover 22 is located at the upper part of the adsorption wheel 23, so that the lower part of the adsorption wheel 23 can be attached and adsorbed on the surface of the bridge steel cable.

[0045] At the same time, a channel 25 with a hollow structure is provided between a pair of sealing covers 22, and a camera assembly 251 and a detection element 252 for detecting the steel cable are provided on the surface of the channel 25 opposite to the steel cable, and then the steel cable is detected by the camera assembly 251 and the detection element 252, and then the seismic resistance of the bridge is evaluated. An air pump 26 for sucking the air flow inside the channel 25 is provided at the upper end of the channel 25, and an air suction pipe 261 is provided between the air suction end of the air pump 26 and the inside of the channel 25. At the same time, a crown gear 231 is provided on the front side of the adsorption wheel 23 extending to the outer surface of the bracket 21, and a double-axis motor 24 is provided between the pair of crown gears 231, and a first gear 241 is provided at the output end of the double-axis motor 24, and the first gear 241 is meshed and connected with the crown gear 231. When the seismic resistance of the bridge needs to be evaluated, the three sets of outer shells 1 can be removed and then put on the outer surface of the bridge cable and tightened and fixed by the fixing belt 12. After the dual-axis motor 24 is running, the first gear 241 can drive a pair of adsorption wheels 23 to rotate, so that the device can move along the outer surface of the cable. While moving, the vacuum pump 26 performs suction, and the part of the adsorption wheel 23 that is in contact with the cable can be adsorbed on the outer surface of the cable through the vacuum pipe 261 and the channel 25, so as to prevent the adsorption wheel 23 from slipping and being difficult to move forward when the device is moving. After the adsorption wheel 23 is subjected to force, its surface will be concave, so that the surface of the adsorption wheel 23 is adsorbed with more force to prevent sliding.

[0046] like Figure 2-Figure 7 As shown, an exhaust box 27 is arranged above the channel 25, and the inner cavity of the exhaust box 27 is arranged in a hollow structure. At the same time, a telescopic tube 211 is arranged on one side of the outer surface of the back frame 2, and connecting pipes 271 are arranged between the four corners of the outer surface of the exhaust box 27 and the telescopic tube 211, and the telescopic tube 211 and the exhaust box 27 can be connected through the connecting pipes 271. A telescopic rod 212 is arranged on one side of the outer surface of the bracket 21, and one end of the telescopic rod 212 extends to the inside of the telescopic tube 211.

[0047] An exhaust head 272 is provided on the bottom of the inner cavity of the exhaust box 27, and an exhaust pipe 262 is provided on the gas output end of the vacuum pump 26. One end opening of the exhaust pipe 262 is connected to the bottom opening of the exhaust head 272. A first exhaust hole 276 is provided on the outer surface of the exhaust head 272 located inside the exhaust box 27. A fixed bin 273 is formed inside the exhaust head 272, and a plug 28 that can be clamped and fixed is provided inside the fixed bin 273. The shape of the plug 28 is matched with the fixed bin 273, and a second exhaust hole 281 identical to the first exhaust hole 276 is provided on the outer surface of the plug 28. A mobile bin 274 is provided on the upper side of the fixed bin 273, and an extension pipe 275 is provided on one side of the outer surface of the exhaust head 272. Therefore, when the vacuum pump 26 is running, the gas discharged from the vacuum pump 26 is discharged into the exhaust head 272 through the exhaust pipe 262. Since the gas is blocked by the plug 28, the gas is discharged into the exhaust box 27 through the second exhaust hole 281 and the first exhaust hole 276 in turn. As the pressure inside the exhaust box 27 increases, the air pressure can push the telescopic rod 212, and then the adsorption wheel 23 can be squeezed and adsorbed on the outer surface of the bridge cable, thereby improving the adsorption tightness. After the adsorption wheel 23 is tightly adsorbed, the gas discharged from the exhaust pipe 262 then pushes the plug 28, thereby separating and interlacing the second exhaust hole 281 and the first exhaust hole 276, and then the gas is discharged into the mobile warehouse 274 through the second exhaust hole 281 and discharged from the extension pipe 275.

[0048] like Figure 2 and Figure 8-Figure 9 As shown, a chute 13 is provided at the upper end of the housing 1, a dust removal ring 3 is provided inside the chute 13, and the end of the extension tube 275 extends to the inside of the chute 13, and an air passage 31 is provided on the outer ring of the dust removal ring 3, and a telescopic hole 32 is provided outwardly on the inner ring wall of the dust removal ring 3, and the telescopic hole 32 is communicated with the extension tube 275. When the gas inside the extension tube 275 is discharged, since the three groups of dust removal rings 3 are sleeved on the outer surface of the bridge cable, the gas inside the extension tube 275 can be blown to the outer surface of the bridge cable through the telescopic hole 32, thereby drying the outer surface of the cable.

[0049] like Figure 8-Figure 10It is shown that when evaluating the seismic resistance of bridge cables, some dust will remain on the outer surface of the cables. This dust plus the water mist on the surface of the cables can easily affect the movement of the device. A telescopic bin 33 is provided inside the dust removal ring 3, and a telescopic column 34 that can be retracted and rotated is provided inside the telescopic hole 32. A cleaning brush 37 is fixedly provided at the end of the telescopic column 34. An air inlet 35 is provided inwardly at the end of the telescopic column 34 located inside the telescopic bin 33, and air guide holes 36 are provided at the end of the air inlet 35 extending to the outer surface of the telescopic column 34. The angles of the openings at both ends of the air guide holes 36 are greater than 90 degrees. An air guide cover 38 is provided on the outer surface of the telescopic column 34, and the curvature of the air guide cover 38 faces the bridge cables. When the gas inside the extension tube 275 flows into the air inlet duct 35, since the aperture of the air guide hole 36 for discharging the gas is small, the telescopic column 34 can be pushed while the gas is being discharged, so that one end of the cleaning brush 37 can be attached to the outer surface of the steel cable. At the same time, since the air guide hole 36 has a certain angle, the telescopic column 34 can be rotated while the gas is being discharged. At the same time, an air guide cover 38 is provided on the outer surface of the telescopic column 34, so as to guide the discharged gas to a certain extent, so that the water mist on the outer surface of the steel cable can be blown dry.

[0050] The method for evaluating the seismic toughness of a bridge across an active fracture is characterized by comprising the following steps:

[0051] Step 1: When the bridge needs to be evaluated for earthquake resistance, the outer shell 1 can be disassembled, and then three sets of outer shells 1 are assembled and sleeved on the outer surface of the steel cable;

[0052] Step 2: After the equipment is assembled, the vacuum pump 26 can be operated. Under the operation of the vacuum pump 26, the adsorption wheel 23 can be closely attached to the outer surface of the steel cable;

[0053] Step 3: Finally, under the operation of the dual-axis motor 24, the camera assembly 251 and the detection element 252 can evaluate and detect the bridge cable.

[0054] Specifically, the method and device for evaluating the seismic toughness of a bridge across an active fracture: when the seismic resistance of the bridge needs to be evaluated, the three sets of outer shells 1 can be removed, and then the outer shells 1 are put on the outer surface of the bridge cable, and then tightened and fixed by the fixing belt 12. After the dual-axis motor 24 is running, the first gear 241 can drive a pair of adsorption wheels 23 to rotate, so that the device can move along the outer surface of the cable. While moving, the vacuum pump 26 performs suction, and the part of the adsorption wheel 23 that is in contact with the cable can be adsorbed on the outer surface of the cable through the vacuum pipe 261 and the channel 25, so as to prevent the adsorption wheel 23 from slipping and being difficult to move forward when the device is moving. After the adsorption wheel 23 is subjected to force, its surface will be concave, so that the surface of the adsorption wheel 23 is adsorbed with more force to prevent sliding.

[0055] When the vacuum pump 26 is running, the gas discharged from the vacuum pump 26 is discharged into the exhaust head 272 through the exhaust pipe 262. Since the gas is blocked by the plug 28, the gas is discharged into the exhaust box 27 through the second exhaust hole 281 and the first exhaust hole 276 in sequence. As the pressure inside the exhaust box 27 increases, the air pressure can push the telescopic rod 212, and then the adsorption wheel 23 can be squeezed and adsorbed on the outer surface of the bridge steel cable, thereby improving the adsorption tightness. After the adsorption wheel 23 is tightly adsorbed, the gas discharged from the exhaust pipe 262 then pushes the plug 28, thereby separating and interlacing the second exhaust hole 281 and the first exhaust hole 276. Then the gas is discharged into the mobile warehouse 274 through the second exhaust hole 281 and discharged from the extension pipe 275. When the gas inside the extension pipe 275 is discharged, since the three sets of dust removal rings 3 are sleeved on the outer surface of the bridge steel cable, the gas inside the extension pipe 275 can be blown to the outer surface of the bridge steel cable through the telescopic hole 32, thereby drying the outer surface of the steel cable.

[0056] When the gas inside the extension tube 275 flows into the air inlet duct 35, since the aperture of the air guide hole 36 for discharging the gas is small, the telescopic column 34 can be pushed while the gas is being discharged, so that one end of the cleaning brush 37 can be attached to the outer surface of the steel cable. At the same time, since the air guide hole 36 has a certain angle, the telescopic column 34 can be rotated while the gas is being discharged. At the same time, an air guide cover 38 is provided on the outer surface of the telescopic column 34, so as to guide the discharged gas to a certain extent, so that the water mist on the outer surface of the steel cable can be blown dry.

[0057] It should be noted that the specific models and specifications of the vacuum pump 26, dual-axis motor 24, camera assembly 251 and detection element 252 need to be selected and determined according to the actual specifications of the device, and the specific selection and calculation method adopts the existing technology in this field, so it will not be repeated in detail.

[0058] The above are only embodiments of the present application and are not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0059] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A device for evaluating the seismic toughness of a bridge across an active fracture, comprising a bracket (21), characterized in that: An adsorption wheel (23) is hingedly provided at the end of the bracket (21), and a hollow chamber (232) is provided in the inner cavity of the adsorption wheel (23), wherein a rotating shaft (235) is provided at the center of the inner cavity of the hollow chamber (232), and a spring (233) is provided between the outer surface of the rotating shaft (235) and the inner cavity wall of the hollow chamber (232), and adsorption holes (234) are evenly distributed on the outer surface of the adsorption wheel (23).

2. The seismic toughness assessment device for a bridge across an active fracture according to claim 1, characterized in that: The outer surface of the adsorption wheel (23) is connected to a sealing cover (22), wherein the sealing cover (22) is located at the upper part of the adsorption wheel (23), and a channel (25) with a hollow structure inside is provided between the pair of sealing covers (22), and a camera assembly (251) and a detection element (252) are provided on the surface of the channel (25).

3. The seismic toughness assessment device for a bridge across an active fracture according to claim 2, characterized in that: An air pump (26) is provided at the upper end of the channel (25), and an air suction pipe (261) is provided between the air suction end of the air pump (26) and the inside of the channel (25).

4. The seismic toughness assessment device for a bridge across an active fracture according to claim 3, characterized in that: A crown gear (231) is provided on one side of the outer surface of the adsorption wheel (23), a double-shaft motor (24) is provided between a pair of crown gears (231), a first gear (241) is provided at the output end of the double-shaft motor (24), and the first gear (241) is meshedly connected with the crown gear (231).

5. The seismic toughness assessment device for a bridge across an active fracture according to claim 4, characterized in that: An exhaust box (27) is arranged above the passage (25), the inner cavity of the exhaust box (27) being a hollow structure. A telescopic tube (211) is arranged on one side of the outer surface of the back frame (2), and connecting tubes (271) are arranged between the four corners of the outer surface of the exhaust box (27) and the telescopic tube (211).

6. The seismic toughness assessment device for a bridge across an active fracture according to claim 5, characterized in that: A telescopic rod (212) is provided on one side of the outer surface of the bracket (21), and one end of the telescopic rod (212) extends into the interior of the telescopic tube (211).

7. The seismic toughness assessment device for a bridge across an active fracture according to claim 6, characterized in that: The bottom surface of the inner cavity of the exhaust box (27) extends to the upper end and is provided with an exhaust head (272), and the gas output end of the vacuum pump (26) is provided with an exhaust pipe (262), and an opening at one end of the exhaust pipe (262) is communicated with an opening at the bottom surface of the exhaust head (272).

8. The seismic toughness assessment device for a bridge across an active fracture according to claim 7, characterized in that: A first exhaust hole (276) is provided on the outer surface of the exhaust head (272) inside the exhaust box (27), and a fixed bin (273) is formed inside the exhaust head (272), and a plug (28) is provided inside the fixed bin (273). The shape of the plug (28) is matched with the fixed bin (273), and a second exhaust hole (281) identical to the first exhaust hole (276) is provided on the outer surface of the plug (28), and a movable bin (274) is extended outward from the upper part of the fixed bin (273), and an extension pipe (275) is extended on one side of the outer surface of the exhaust head (272).

9. The seismic toughness assessment device for a bridge across an active fracture according to claim 8, characterized in that: The upper end of the housing (1) is provided with a slide groove (13), a dust removal ring (3) is arranged inside the slide groove (13), and the end of the extension tube (275) extends into the slide groove (13), and an air passage (31) is provided on the outer ring portion of the dust removal ring (3), and a telescopic hole (32) is provided outwardly on the inner ring wall of the dust removal ring (3), and the telescopic hole (32) is communicated with the extension tube (275).

10. A method for evaluating the seismic toughness of a bridge across an active fault, characterized in that: The steps include: Step 1: When the bridge needs to be evaluated for earthquake resistance, the outer shell (1) can be disassembled, and then the three sets of outer shells (1) are assembled and sleeved on the outer surface of the steel cable; Step 2: After the equipment is assembled, the vacuum pump (26) can be operated. Under the operation of the vacuum pump (26), the adsorption wheel (23) can be closely attached to the outer surface of the steel cable; Step 3: Finally, under the operation of the dual-axis motor (24), the camera assembly (251) and the detection element (252) can evaluate and detect the bridge cable.

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